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the dtype of read image

asked 2017-02-19 17:46:12 -0500

surfreta gravatar image


I have read an image as follows

image = cv2.imread('/data/cat.jpg',cv2.IMREAD_UNCHANGED)
print('image dtype ',image.dtype)

The dtype for the read image is uint8, how to transfer it into float32 or what kind of read option can enforce the read image as float32.

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answered 2017-02-19 22:26:09 -0500

Tetragramm gravatar image

You can simply use the numpy functions

floatImage = np.float32(image)
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answered 2017-02-20 02:59:43 -0500

pi-null-mezon gravatar image

updated 2017-02-20 03:01:13 -0500

Use Mat::convertTo(...) function.

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Asked: 2017-02-19 17:46:12 -0500

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Last updated: Feb 20 '17